Add a little oil to a pot and over a medium heat sauté the onion and garlic until softened. Sprinkle in the ground turmeric, ground coriander and ground cumin - cook, stirring constantly for a few minutes.

Add the pumpkin pieces, red lentils and boiling water (or stock). Bring to the boil then reduce heat and allow to simmer for 30 minutes or until the pumpkin and lentils are soft. Put it aside to cool slightly before blending until smooth.